Valves Varian, Inc. Vacuum Technologies - Ideal Vacuum Products
Valves Varian, Inc. Vacuum Technologies - Ideal Vacuum Products
Valves Varian, Inc. Vacuum Technologies - Ideal Vacuum Products
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GateKeeper Aluminum Gate <strong>Valves</strong><br />
63 mm<br />
Air-Operated<br />
100 mm<br />
Air-Operated<br />
250 mm<br />
Air-Operated<br />
The GateKeeper Series Aluminum Gate <strong>Valves</strong> are economical,<br />
reliable vacuum shut-off devices designed and manufactured<br />
by <strong>Varian</strong>. The valves provide a low-cost, low-particle, low<br />
profile means of isolating a high vacuum pump, and are a<br />
less expensive alternative to stainless steel valves.<br />
The GateKeeper Series valve design employs a cast aluminum<br />
body, a linear drive mechanism, a counter-plate sealing<br />
mechanism, and an elastomer shaft seal. The result is a clean,<br />
economical, smoothly actuated valve. The body is cast using<br />
the VaPore® process which tightly controls each material<br />
input and process step to deliver a casting that is free of<br />
porosity. A reliable high vacuum shaft seal eliminates the<br />
need for a bellows.<br />
Features<br />
• Cast aluminum body using VaPore process for vacuum integrity<br />
• High vacuum shaft seal – no bellows<br />
• Extruded aluminum air cylinder with internal dampening<br />
to reduce shock<br />
• Precision ball bearings guided in contoured ramps<br />
• Seal plate assembly traveling on guide rails – no rollers<br />
contacting aluminum casting<br />
• No seal plate adjusting screws that wear into the aluminum casting<br />
• No adjustments required to provide the necessary sealing force<br />
• Small flange face-to-face dimension<br />
• Remote and visual position indication switches<br />
The linear drive and counter-plate sealing mechanism have<br />
been designed to minimize metal-on-metal contact. The<br />
assembly is an elegant mechanism that uses a small number<br />
of precision-machined components. The required sealing<br />
forces are generated with a minimum of moving parts, and<br />
without adjustment screws. As a result, very few particles are<br />
generated within the valve.<br />
The <strong>Varian</strong> aluminum gate valve has a small flange<br />
face-to-face profile. ISO/F flange details are machined into<br />
the cast body to provide the convenience of standard ISO<br />
claw clamp connections.<br />
Benefits<br />
• Low-cost, lightweight, high vacuum compatible valve<br />
• Trouble-free operation<br />
• High cycle life<br />
• Quiet, low vibration valve actuation<br />
• Very low particle generation<br />
• Highly repeatable, long-lasting seal<br />
• Convenience for system design and installation<br />
• Ease of operation<br />
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